/*
 * ANTI-FORMULA
 * Components — Nav · Footer
 */

/* ─── NAV ────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 24px 0;
  transition: background 0.3s, padding 0.3s, backdrop-filter 0.3s;
}
.nav.filled {
  background: rgba(20, 18, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 16px 0;
}

.nav-inner {
  max-width: var(--g-max);
  margin: 0 auto;
  padding: 0 var(--g-margin);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  height: 20px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-links a {
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--lab-white);
  opacity: 0.7;
  transition: opacity 0.2s;
}
.nav-links a:hover,
.nav-links a.active { opacity: 1; }

.nav-links .nav-cta {
  opacity: 1;
  padding: 8px 20px;
  border: 1px solid var(--signal-red);
  color: var(--signal-red);
  transition: background 0.2s, color 0.2s;
}
.nav-links .nav-cta:hover {
  background: var(--signal-red);
  color: var(--lab-white);
}

/* ─── MOBILE NAV ─────────────────────────────────────────────── */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 4px 0;
}
.nav-burger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--lab-white);
  transition: transform 0.3s, opacity 0.3s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-drawer {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 999;
  background: var(--specimen-black);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.nav-drawer.open {
  opacity: 1;
  pointer-events: auto;
}
.nav-drawer a {
  font-family: var(--f-sans);
  font-size: 32px;
  font-weight: 600;
  color: var(--lab-white);
  opacity: 0.7;
  transition: opacity 0.2s;
}
.nav-drawer a:hover { opacity: 1; }

/* ─── PROGRESS LINE ──────────────────────────────────────────── */
.progress-line {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  background: var(--signal-red);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 1001;
}

/* ─── FOOTER ─────────────────────────────────────────────────── */
.footer {
  background: var(--specimen-black);
  border-top: 1px solid var(--dark-rule);
  padding: 80px 0 40px;
}
.footer-inner {
  max-width: var(--g-max);
  margin: 0 auto;
  padding: 0 var(--g-margin);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 64px;
  margin-bottom: 64px;
}

.footer-brand {
  max-width: 360px;
}
.footer-name {
  font-family: var(--f-sans);
  font-size: 18px;
  font-weight: 600;
  color: var(--lab-white);
  margin-bottom: 16px;
}
.footer-sig {
  font-family: var(--f-serif);
  font-size: 16px;
  font-style: italic;
  color: var(--dark-body);
  line-height: 1.5;
}

.footer-nav {
  display: flex;
  gap: 40px;
}
.footer-nav a {
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dark-mid);
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--lab-white); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--dark-rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-copy {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--dark-mid);
}
.footer-email a {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--dark-mid);
  transition: color 0.2s;
}
.footer-email a:hover { color: var(--lab-white); }

/* ─── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .nav-inner { padding: 0 24px; }

  .footer { padding: 64px 0 32px; }
  .footer-inner { padding: 0 24px; }
  .footer-top {
    flex-direction: column;
    gap: 40px;
  }
  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}